Cyclopentene

68.12

68.12

635707

205-532-9

ONM2CKV81Z

5160

2246

DTXSID6029171

29021990

0

2.33

Colorless Liquid

0.7754 g/cm³ @ Temp: 14 °C

-135.1 °C

44.2 °C

<−30 °F

n 20/D 1.421(lit.)

H2O: immiscible

0-6°C

20.89 psi ( 55 °C)

Oral-Rat LD50: 1656 mg/kg

Inflammable in case of open flame, high temperature, oxidant; burning produces irritating smoke

6.70e-11 cm3/molecule*sec

Highly flammable. Insoluble in water.

Hydrocarbons, Aliphatic Unsaturated

Highly Flammable

CYCLOPENTENE may react vigorously with strong oxidizing agents. May react exothermically with reducing agents to release hydrogen gas. In the presence of various catalysts (such as acids) or initiators, may undergo exothermic addition polymerization reactions.

Cyclopentene|B: Compounds that form peroxides on concentration (distillation/evaporation)|Clark

II

3

UN 2246 3/PG 2

3

11-21/22-36/37/38-65-67-52/53-38

9-16-26-33-36-62-61-36/37

GY5950000

F,Xn

Storehouse ventilated at low temperature and dry; stored separately from oxidants and acids; should not be stored for a long time to prevent polymerization

Explosive when mixed with air

Stable. Highly flammable. Incompatible with strong oxidizing agents. Store cold.

P210, P233, P240, P241, P242, P243, P280, P303+P361+P353, P370+P378, P403+P235, P501

H225

Special Hazards of Combustion Products: Vapor may travel considerable distance to a source of ignition and flashback. Explosion may occur under fire condition. (USCG, 1999)|Flammable - 3rd degree, Reactive - 1st degree

|Danger|H225 (100%): Highly Flammable liquid and vapor [Danger Flammable liquids]|P210, P233, P240, P241, P242, P243, P261, P264, P270, P271, P273, P280, P301+P310, P301+P312, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P312, P321, P322, P330, P331, P332+P313, P337+P313, P362, P363, P370+P378, P403+P233, P403+P235, P405, and P501|Aggregated GHS information provided by 171 companies from 11 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.|H225: Highly Flammable liquid and vapor [Danger Flammable liquids]|P210, P233, P240, P241, P242, P243, P280, P303+P361+P353, P370+P378, P403+P235, and P501

Excerpt from ERG Guide 128 [Flammable Liquids (Water-Immiscible)]: CAUTION: All these products have a very low flash point: Use of water spray when fighting fire may be inefficient. CAUTION: For mixtures containing alcohol or polar solvent, alcohol-resistant foam may be more effective. SMALL FIRE: Dry chemical, CO2, water spray or regular foam. LARGE FIRE: Water spray, fog or regular foam. Do not use straight streams. Move containers from fire area if you can do it without risk. FIRE INVOLVING TANKS OR CAR/TRAILER LOADS: Fight fire from maximum distance or use unmanned hose holders or monitor nozzles. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. For massive fire, use unmanned hose holders or monitor nozzles; if this is impossible, withdraw from area and let fire burn. (ERG, 2016)

Excerpt from ERG Guide 128 [Flammable Liquids (Water-Immiscible)]: As an immediate precautionary measure, isolate spill or leak area for at least 50 meters (150 feet) in all directions. LARGE SPILL: Consider initial downwind evacuation for at least 300 meters (1000 feet). FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2016)

Excerpt from ERG Guide 128 [Flammable Liquids (Water-Immiscible)]: ELIMINATE all ignition sources (no smoking, flares, sparks or flames in immediate area). All equipment used when handling the product must be grounded. Do not touch or walk through spilled material. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. A vapor-suppressing foam may be used to reduce vapors. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. Use clean, non-sparking tools to collect absorbed material. LARGE SPILL: Dike far ahead of liquid spill for later disposal. Water spray may reduce vapor, but may not prevent ignition in closed spaces. (ERG, 2016)

Self-contained breathing apparatus and protective clothing. (USCG, 1999)

moderately toxic

May be harmful by inhalation, ingestion, or skin absorption. May cause eye and skin irritation. (USCG, 1999)

INHALATION: Call a physician. If inhaled, remove victim to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. EYES: Separate eyelids with finger. Flush with copious amounts of water for at least 15 minutes. SKIN: Flush with water. (USCG, 1999)

Cyclopentadiene

Plastic material and resin manufacturing|Cyclopentene: ACTIVE

Fire Hazards -> Flammable - 3rd degree, Reactive - 1st degree